Home / 20,051.49-30,060.32-12,639.61

Finding the Fourth Proportional to 20,051.49, 30,060.32 and 12,639.61

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Solution

The fourth proportional to 20,051.49, 30,060.32 and 12,639.61 is: 18,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,051.49 : 30,060.32 = 12,639.61 : x
  2. Step 2: Convert to fraction form
    20,051.49/30,060.32 = 12,639.61/x
  3. Step 3: Cross multiply
    20,051.49x = 30,060.32 × 12,639.61
  4. Step 4: Simplify right side
    20,051.49x = 379,950,598.73
  5. Step 5: Solve for x
    x = 379,950,598.73/20,051.49
  6. Step 6: Final answer
    x = 18,948.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.